Full collapsible panicproof revolving door



Dec. 6, 1932. R. 1.. BLANCHARD 9 6 FULL COLLAPSIBLE PANICPROOF REVOLVING DOOR Filed Feb. 25, 1931 2 Sheets-Sheet 1 WlfiSSES I X I'NVENTOR jiaei'Z i .filauzt/Yar/ BY m 1 6 MQ/L w ATTORNEY TOR 2 Sheets-Sheet 2 km fwA Filed Fe b. 26, 1931 I R. L. BLANCHARD FULL COLLAPSIBLE PANICPROOF REVOLVING DOOR Dec; 6,

WITNESSES 324V; Wa /7 ATTORNEY Patented Dec. 6, 1932 UNITED STATES PATENT OFFICE ROBERT L. 1BILAIN'CHAIRJ), OF NEW YORK, N. Y., ASSIGNOB TO VAN KANINEL REVOLVINO' "DOOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY COLLAPSIBLE PANICPROOF REVOLVING DOOR Application filed February 26, 1931. Serial No. 518,569.

This invention relates to revolving doors, andhas particular reference to certain improvements in that class of revolving doors known as the full collapsible panic proof type in which the several wings thereof are capable of movement from their normal radial relation, under excessive or abnormal pressure, to positions where they project from one side of a central su port and are disposed approximately in para lel planes.

This type of revolving door structure has been accomplished in various and sundry ways, some of which are effective and others of whichare defective, but all of which are comparatively complicated in structure and expensive to produce and assemble.

It is, therefore, the outstanding object of the present invention to accomplish the same general object by means of a comparatively simple and inexpensive structure, by virtue of which the objectionable features of the previous doors are overcome while employing aless'complicated and more efiicient construction which is positive and reliable in its actionwherein all of the leaves are in' substantially parallel planes to each other or practically any other arrangement which may be assumed by the leaves of this class of doors.

More particularly, the invention resides in an improved means for supporting the door wings from, connecting the same with and guidingsaid-leaves for'movement with re- A spe'ct to a rotary central support or shaft, in

* which use is made of an element movable with and disposed perpendicular to said central support or shaft and in which said element and each door wing are provided with axially extending"intcrengaging recessions and projPCtiOllSSPlVilig td permit each door wing to swing successively on relatively different axes.

With the above recited and other objects in view, reference is had to the following description and accompanying drawings, in which there is exhibited one example or embodiment of the invention, while the claims define the actual scope of the same.

In the drawings:

Figure 1 is fragmentary vertical sectional view of a revolving door constructed in accordance with the invention and illustrating the door leaves in their normal radial position.

Figure 2 is an enlarged fragmentary sectional plan view therethrough taken approximately on the line indicated at 2-2 of F igure 1.

Figure 3 is a similar view showin the door wings in their fully collapsed position.

Figure at is a similar view showing the door wings in a folded position.

Figure 5 is a fragmentary transverse scotional view taken approximately on the line indicated at 55 in Figure 2.

Figure 6 is a side view of the door wing supporting element which is carried by the central shaft.

Referring to the drawings by characters of reference, A designates the central shaft or support which is mounted for rotation in any manner common to this class of doors. The door wings are designated generally oy the reference characters B, C, D and E, and said wings are connected to, supported from and guided-with respect to said central shaft or support A, to permit of their independent movement from a normal radially disposed active position to a fully collapsed inactive position or other folded positions, by theimproved means as follows: This means includes preferably a pair of circular elements or disk like plates 10 of the necessary diameter and thickness which are secured to, movable with and disposed in a plane perpendicular to the central support or shaft A. The plates or disks 10 are preferably arranged adjacent the upper and lower ends of the shaft or central support A, and the door wings are each provided with notches 11 opening hrough their inner edges and cor- 7 notch 13 opening through its inner end,

which notch corresponds in height to the thickness of the late or disk 10 and is of a length correspon 'ngly approximately to the length of the plate 10 which projects from the central shaft or support A. The insert preferably constitutes the web portion of acasting which includes parallel escutcheon plates 14 which are spaced apart a distance equal to the thickness of the door wing, and

which escutcheon plates are cut away coincident with the notches 13 in the filler plate or web 12. The escutcheon lates receive therethrough screws or equiva ent fastening elements 15 which are anchored in the door wings or otherwise secured to attach the casting in place on the door wing. The surface presented by the upper wall of the notch 13 of each filler plate 12 bears upon the upper surface of the plate or disk 10 to support the door wings from the central shaft or support. v

In order to connect the door wings to and guide the same for independent swinging movement with respect to the plates or disks 10, each plate is provided with vertically disposed circumferentially spaced cutouts F, the cutouts corresponding in number to the number of door wings, which in the present instance is four, although the number may vary within the scope of the invention. While the cutouts in the present instance are illustrated as extendingv completely through the thickness of the plates 10, it is to be understood that within the scope of the invention, they may extend partially therethrough if desired, while opening through either the upper or lower surface of the plates 10. The cutouts each include what will be termed a radial portion G and a circumferential portion H, which latter portion intersects the T semi-circular openings 17 is greater than thespacing of the walls 19 and 20, for a purpose portion G. The radial portion G is defined bya pair of oppositely concaved confronting arcuate walls 16 which are respectively struck from the centers of a pair of circumferentially spaced semi-circular openings 17, which openings define the terminals of the "circumferential.portion H of the cutout F.

The walls 16 at their inner ends merge into and are joined by a substantially semi-circular wall 18, from the center of which concentric inner and outer walls 19 and 20 are struck, which walls 19 and 20, together with the semi-circular openings 17, define-the portion H of the cutout F. The diameter of the which will be later developed. The outer extremities 16a of the walls 16 which lie between the portion H and the outer periphery of the disk or plate 10, are ofi'set or recessed with respect to the remainders thereof, al-

though struck on an are from the same center.

The guiding and connecting means further includes a vertically extending or axially .disposed pin 21 disposed within and projecting from one wall of the notch 13 of the insert 12 adjacent the innermost end of said insert, said pin 21 being of adiameter corresponding to the diameter of the semi-circular wall 18 of the cutout F. A pair of pins 22 is. spaced transversely of the insert 12. adjacent the outer end of and within the notch 13. The pins 22 extend vertically or axially from one wall of the notch 13, in the present instance illustrated as the lower wall. As particularly illustrated in the present disclosure, these pins are carried by lateral bosses 23, either cast integral with or otherwise carried by the casting. The pins 22 are formed with a flattened face 24 or otherwise constructed to pre-.

sent a minor thickness corresponding to the width of the portion H of the cutout F and -means consists of a detent in the nature of a ball 26 which is normally urged inwardly through a bore 27 in each insert or casting web. 12, by means of a spring 28 so that a portion of the ball or detent engages within a keeper opening29 which is formed in a bridge portion 30 which bridges a portion of the cutout F which opens. through the periphery of the plate or disk 10. This means may be used alone or in combination with a cable lock or other equivalent wing holding devices.

In use and operation, the door wings B, C, D and E are normally disposed radially to turn with the central support or shaft A and the plates or disks 10. In this position of the wings, each pin 21 is disposed within the semi-circular wall of 'the cutout F, while the pins 22 are disposed within the circumferential portion H of the cutout F, as clearly disclosed in Figure 2 of the drawings. \Vhen sufiicient force is exerted to release the means which retains the wings radially, the wings may be swung in either direction relative to the plate or disk 10, in which instance the pin 21 initially serves as a. fulcrum, while the pins 22 act as guides which move in the guideway or portion H of the cutout F which is defined between the walls 19 and '20. Swinging on this axis or fulcrum, the door may be moved until one of the pins 22 enters the semi-circular opening 17, which limits the swinging I limit is reached when the concave surface engages the periphery of the plate or disk 10. It is apparent that each wing may be swung throughout an arc of approximately 270 degrees, hence, affording connecting and guide means for each wing, which obviously permits of the movement of all of the door wings to what is known as the full collapsible position, as illustrated in Figure 3, wherein all of the door wings are in approximately parallel relation projecting from one side of the central support. It is also possible, as shown in Figure 4, to fold two Wings to project in opposite directions from the central support,

which is the common arrangement when the doors are in a partially folded position. After a door wing has been swung to the limit of its folded position, as, for instance, the wing B in Figure 3, the movement of the same to a normal radial position requires -only a reversal of the operation previously described, wherein the wing is swung in an opposite direction, using the pin 22 in the opening 17 as a fulcrum or axis until the pin 21 is again in engagement with the semi-circular wall 18, which at the precise moment of engagement therewith disposes the minor thickness of the pin 22 in the opening 17 in relative position to the portion H of the cutoat'F, to permit it to be moved in said portion H as a guideway. At-this moment, the other pin 22 will have reached the position where it will be received by the portion H to constitute with the other pin 22a guide operating in the portion H as a guideway.

From the foregoing, it will thus be seen that an extremely simple and economical means has been devised for supporting the wings of a revolving door from, connecting the same with and guiding said wings with respect to the central support, which means may be economically produced and assembled and which requires but few and simple parts which will withstand the usage to which they are subjected.

While there has been illustrated and described a single and preferred embodiment of the invention, it is to be clearly understood that no limitation is intended to the precise structural details, but that variations and modifications thereof which properly fall within the scope of the appended claims may be resorted to when desired.

i What is claimed is:

1. In a revolving door structure, means for supporting the door wings from and guiding the same for movement with respect to a central support, including an element carried by i and movable with the central support, said element having a cutout portion for each door wing and defining radial and circumferential communicating guides, a member carried by each door having a plurality of projections engaging within said guides and cooperating therewith to successively serve as relatively different axes upon which the door wing swings.

2. In a revolving door structure, means for supporting, connecting and guiding each door wing for relative swinging movement with respect to a central support, including an element carried by and movable with the central support and disposed perpendicular thereto, said element having a vertically extending circumferential guideway for each door wing, which guideway opens medially through the periphery of the element anda member carried by the inner edge of each door leaf and notched to straddle said ele-, ment and having apair of laterally spaced vertically projecting pins serving respectively as guides to permit of circumferential shifting movement of the door wings, as stops for limiting said shifting movement and as axes for swinging'the door wings.

3. In a. revolving door structure, means for supporting, connecting and guiding each door wing for relative swinging movement with respect to a. central support, including an element carried by and movable with the central support and disposed perpendicular thereto, said element having a vertically extending circumferential guideway for each door wing, which guideway opens medially through the periphery of the element and a member carried by the inner edge of each door leaf and notched to straddle said element and having a pair of laterally spaced vertically projecting pins serving respectively as guides to permit of circumferential shifting movement of the door wings, as stops for limiting said shifting movement and as axes for swingiilg the door wings, the opposite ends of said guideways having enlarged semicircular terminal portions and said pins having minor and major measurements.

4. In a full collapsible revolving door structure, means for supporting the door wings from and guiding the same for movement with respect to a central rotary support, said means including a plurality of pins carried by each door wing and a plurality of communicating guideways for-med on said central support to permit each wing to move successively on different axes.

5. In a full collapsible revolving door structure, means for supporting the door wings from and guiding the same for move- 6. In a revolving door structure, means for supporting the door wings from and guiding the same for relatlve swmging movement with respect to acentral support, saidmeans including an element movable with 'and disposed perpendicular to saidcentral support, each of said door wings having a set of axially extending projections and said element having independent recewes with which the set of projections of the corresponding wing engages to permit each door wing to swing in one direction upon one projection as an axis' and to swing in the opposite direction upon another projection as an axis.

7. A mounting for each wing of a revo1ving door structure including a common cen- "tral support fashioned to provide circumferentially extending arcuate guideways for each wing, said guideways opening medially through the periphery of said support, said support having a pair of circular apertures communicating respectively with the opposite ends of the guideway and of greater diameter than the width of the guideway and a pair of pins on each door wing spaced transversely of the wing a distance equal to the distance between one of said apertures'and the medial opening of the guideway, said pins having a minor and major measurement corresponding respectively to the width of the guideway'and the diameter of the apertures. V

8. A door wing mounting for a revolving door structure including an element carried by the central support having a circumferential guideway for each wing opening medially through the edge of said element and formed at its opposite ends with semi-circular terminal portions of greater diameter than the width of the guideway, a pair of axially projecting pins on each door wing spaced laterally of the wing and disposed a distance apart corresponding to the distance between each terminal portion of the guideway and the medial opening of the guideway, said pins each having a minor and major measurement corresponding respectively to the width of the guideway and the diameter of the terminal portions and coacting with the terminal portions when rotated therein to lock the door wing for pivotal movement only.

9. In a revolving door structure including a plurality of wings and a rotary central support, means for connecting the Wings and supporting the same from the central support'to permit of independent relative movement of said wings from their normal radial positions to a fully collapsed condition in substantially parallel relation, said means including a pair of projections spaced transversely of each door wing and extending parallel to the axis of rotation of the door structure, a' member secured to and arranged perp'endicular to the central support, said member having a 'circumferentially extending guideway for each door wing and an intersecting radial guideway, with which guideways the projections cooperate to permit of movement of the door successively on different axes.

10. A revolving door structure having the combination of a plurality of door wings and a. rotary central support therefor, said central support having for each wing a circumferentially extending guideway formed 'at its opposlte ends with a semi-circular ter- .minal of greater diameter than the Width of the guideway and said guideway opening through the periphery of the central support, and a pair of projections on each door' wlng extending parallel to the axis of rotation of the central support and having a minor dimension normally engaging in the guideway to guide the door for circumferentially shifting movement and having a major dimension engageable with the semi-circular for swinging movement and to lock the same against circumferential shifting when initially swinging on -the pin as an axis.

11. In a revolving door structure, means terminalof the guideway to fulcrum the door ice for supporting the door wings from and v guiding the same for movement with respect to a central support, including an element carried by and movable with the central support, said element having a cutout portion for each door wing and defining radial and circumferential intersecting portions each having arcuate guide Walls and a member carried by each door having a plurality of projections engaging within said guides and cooperating therewith to successively serveas different axes upon which the door wing swings and in which at least one projection serves as a guide when another is functioning.

as an axis.

12. In a full collapsible revolving door structure, the combination of a central support, door wings and a pair of independent pin and slot connections between said central support and each of said door Wings, so arranged that each wing is supported and initially guided for circumferential movement from a normal radial position by said pin and slotconnections and subsequently swingable in opposite directions respectively on the said pins as diiferent axes to a folded fully collapsed condition extending from one side of the central support and disposed in substantially parallel relation to each other.

13.- In a revolving door structure, means and relative pivotal movement of each door wing upon difierent projections of the set as separate axes.

14. In a revolving door structure, a central supporting member, means secured to said member for supporting the door wings and pivotal members carried by each door wing engaging the said supporting means for connecting the wings thereto, each wing being collapsible in one direction by swinging movement on one pivotal member and collapsible in the opposite direction b swinging movement on another pivotal mem r.

15. In a revolving door structure, a central supportin member, an element secured to sa1d mem er for supporting the door wings and a pair of pivotal members carried by each door wing engaging said element to constitute a common means for connecting the wings to said element and to permit of swinging movement of each wing in opposite irections respectively on said pairs of pivotal members,

16. In a revolving door structure, a central supporting member, means secured to said member for supporting the door wings, and members carried by each door for engaging the said supporting means for connectin the wings thereto for ivotalmovement, eac wing being collapsib e in one direction by swinging movement on one member and co lapsi 1e in the opposite direction by swinging'movement on another member.

17. In a revolving door structure, a central supporting member, means secured to said member for supportin the door wings, members carried by each oor for engaging the said suplportingmeans for connecting the wings t ereto for ivotal movement, each wing being collapsi le'in one direction b swin lapsi 1e in the oppositedirection by swinging movement on another member, and interengaging guide means provided respectively on each door wing and the wing'supporting means for guiding the swinging movement of the wings on the respective members.

18. In a revolving door structure, a centralsupporting member, means secured to said member for supporting the door wings, and

' co-operating means carried by opposite sides mean; for connect the wings thereto,

' g being collapsi Is in one direction a movement on the co-operatmg of each door wing and by the pp 7 e by means carried by the sup ortin means and by one side of the door wing an collapsible in the: opposite direction by swinging movev ment on the other co-operating means carried by the supporting means and the ops posite side of t e door w1n ROBERT L. BILANGHARD.

g movement on one member and co 

